After performing in bands such as Paranoia and Media Youth, Heath joined X Japan in August 1992, replacing Taiji who had left earlier in the year.

[2] In June, Heath left Media Youth and on August 24, 1992, at a press conference in New York City at Rockefeller Center, it was announced that he had joined X Japan.

[4] Heath's first concert with them was the October 1992 Extasy Summit, and the following year they released Art of Life, which topped the Oricon Albums Chart.

In 1995, Heath began a solo career with a self-titled box set, containing a five-track CD and a home video, that was released on February 22.

According to a report by the newspaper Sponichi, X Japan vocalist Toshi visited drummer Yoshiki in Los Angeles in November 2006 to work on a song as a tribute to the late guitarist Hide.

[11] Rumors of a X Japan reunion subsequently began, and in June Yoshiki was reported as having expressed interest in a tour and that he was in talks with Heath and Pata regarding their participation.

[12] In mid-March 2009, it was reported in the media that Heath was having issues with his personal management agency, that X Japan's concerts in South Korea on the 21st and 22nd were cancelled as a result, and that the bassist might leave the band.

[16] Their first world tour began with four gigs in Europe from June 28 to July 4, 2011, and was resumed from September to October with five shows in South America and five in Asia.

All of the shows were acoustic in support of nationwide power conservation efforts and also featured Luna Sea's Shinya and the Orchestra Ensemble Kanazawa.

[23][24] A source told the magazine that the musician had felt unwell since the beginning of the year and that when he went to a doctor, he was diagnosed with cancer that had already progressed to an advanced stage.

[24][25] On November 11, an official statement posted on his website disclosed that Heath was diagnosed with colon cancer in June and died in a hospital on October 29, 2023, after his condition suddenly worsened that month.

[28] The event was attended by approximately 10,000 fans and 100 celebrities, including Pata and Sugizo, and featured Yoshiki performing a piano rendition of "Endless Rain".

Musical guests included Pata, Sugizo, Jo:Ya, Shame, and Morrie, the last of whom revealed he and Heath had planned to form a band together before the bassist's illness.